Loose leaf post binder



Jail. 19, 1932. J 5, DORSCH 1,841,575

LGOSE LE'KF POST BINDER Filed May 31, 1930 {5M3 Danae k plane coextensive with the plane of the b 45 drical segments of the post engage. A

i? i f V r JOHN s. nonson, 0F cnrcaeo, ILLINOIS, AssIeivon T0 LGOSE LEAF ran'raLs 00., A

CORPORATION on raIssonB-r v noosn rosr Brnnnie Application filed May 31,

7 attached to the binder back;

Fig. 2 is a vertical section through the pest and back;

Fig. 3 is a oottom view of Fig. 2;

Fig. 4 is a perspective detail of the lower end of the post;

Fig. 5 is a perspective view of the binder back, illustrating the segmental attachment holes.

The posts on loose leaf binders, particularly when they are long and secure heavy sheets as in ledgers and account books, are subjected to a surprising strain. Furthermore, the posts are called upon to withstand a considerable degree of mistreatment, for in dbinding up the book, screwdrivers and even pliers are frequently used, and all too frequently theposts are wrenched loose by such treatment.

With reference to the figures, it will be noticed that I have provided a tubular post 11 comprising a cylindrical section 12', a tapered section 13 and a reduced cylindrical section 14. The reduced section 1 bears an interior screw thread in which the binding screw 15 engages. A collar 16 is swaged or otherwise formed near the lower end. The lowermost face ofthe collar 16 isfiattened to fornia bearing surface 17 for the binder back. The post is slotted at 18 from its open end to a ing surface 17. Two independent cyli. segments 19, 21 are thus formed. The b. it back 10 has two segment shaped hole: punched therethrough in which the and its the separating the two holes fills of the parts slot 18. The protruding ends L 19 and 21 are then rolled or'turned over against the outer surface of the binder back 10, holding'the back clamped securely be- 1930. Serial mam tween the flange 25 thus formed "and the buttress-like collar 16.

The protruding ends of the post may be bent over the bar 24 instead of outwardly around the periphery of the segment shaped holes. I prefer, however, the outwardly bent flange.

It will be noticed that this construction obviates the necessity of deformed washers or other binding parts which have heretofore been used to secure the post to the binder back and that the strength provided by the swaged collar and rolled flange is sufficient to resist any strains to which the device may be subjected.

I claim as my invention:

1. In a loose leaf binder, a binder back provided with segmental slots, a tubular paperholding post having a swaged collar adjacent its lower end, a slot cut across the lower end of the post and terminating in the plane of the collar, the cylindrical segments thus formed engaging the segmental slots of the binder back, said segments being turned over to engage the binder back and to hold it clamped between the collar and the turned flange.

I 2. A tubular post for loose leaf binders having an integral'swaged collar adjacent its lower end to form an abutment for the binder back, and a slot in the end of the post terminating in the outer plane of the swaged collar whereby the post is adapted to engage a cross bar portion of the binder back and be prevented from turning thereby, and having a formed upper end adapted to receive a binding screw.

3. Attaching means for binder posts comprising in combination a tubular post, an integral collar. formed adjacent one end, a slotcut transversely across the end of the post terminating in the outer plane of the collar, a binder back having holes through which the cut-away ends of the post pass and lying against the collar, the ends of the post being turned down over the outer side of the binder back.

4. Attaching means for binder posts comprising in combination a post section having its end cut away to form a plurality of disconnected cylindrical sections, an integral collar formed about the post at the base of the cylindrical sections, a binder back having non-circular holes therein fitting over the cylindrical sections and abutting against the collar, the ends of said post being turned over against the outer face of the binder back. 5. A loose leaf binder comprising a binder back having non-circular holes cut therethrough and a paper holding post having a swaged collar adjacent its end a slot cut transversely across the post and terminating in the plane of the collar, forming cylindrical sections which engage the holes and having the protruding cylindrical sections turned over against the opposite face of the back.

In testimony whereof I aifix my signature.

JOHN S. DORSCI-I. 

